JamesYeh Thank you, the second one is the right one. The first one is the initial config needed to start calibration, the second one is the full config generated by the calibration.
We are working on that. I will get back to you as soon as we resolve it.
Calibration error
JamesYeh Which branch was used for calibration ?
What do you mean by branch? USB 3.2 or Thunderbolt 4 port? We tried both. We also tried with and without your Y adapter.
JamesYeh open terminal, navigate to depthai folder and type git branch, you should see similar output to the one on the picture. The row with * is the branch name we are looking for
This is what I saw... Lite_calibration.
@"JamesYeh" I would like you to try one little experiment.
in your depthai/ folder, locate the calibrate.py file. open it with any text editor or an IDE like Pycharm.
On lines 611-614 
you can locate this code:
if self.args.factoryCalibration:
self.device.flashFactoryCalibration(calibration_handler)
is_write_succesful = self.device.flashCalibration(calibration_handler)change it to
if self.args.factoryCalibration:
self.device.flashFactoryCalibration(calibration_handler)
is_write_succesful = self.device.flashCalibration2(calibration_handler)The change is int the self.device.flashCalibration2
It can happen that this code piece is not on above mentioned lines, it depends on the depthai branch. Either way yor calibrate.py file should contain those lines so you can find them.
When it is done, run the calibration again, the same way as before. Now, it should end with en Error printed out in the terminal. Send us the error please.
It's interesting that I don't see the codes you sent me. Here is what I installed for the calibration process in your website https://docs.luxonis.com/en/latest/pages/calibration/. Where did you get the calibrate.py?
git clone https://github.com/luxonis/depthai.git
cd depthai
git checkout lite_calibration
Here are the codes at the end of the calibrate.py
resImage = None
if not self.device.isClosed():
dev_info = self.device.getDeviceInfo()
mx_serial_id = dev_info.getMxId()
calib_dest_path = dest_path + '/' + mx_serial_id + '.json'
calibration_handler.eepromToJsonFile(calib_dest_path)
is_write_succesful = False
try:
is_write_succesful = self.device.flashCalibration(
calibration_handler)
except:
print("Writing in except...")
is_write_succesful = self.device.flashCalibration(
calibration_handler)
if is_write_succesful:
resImage = create_blank(900, 512, rgb_color=green)
text = "Calibration Succesful with"
cv2.putText(resImage, text, (10, 250),
font, 2, (0, 0, 0), 2)
text = "Epipolar error of " + str(epiploar_error)
cv2.putText(resImage, text, (10, 300),
font, 2, (0, 0, 0), 2)
else:
resImage = create_blank(900, 512, rgb_color=red)
text = "EEprom Write Failed!! " + str(epiploar_error)
cv2.putText(resImage, text, (10, 250),
font, 2, (0, 0, 0), 2)
text = "Try recalibrating !!"
cv2.putText(resImage, text, (10, 300),
font, 2, (0, 0, 0), 2)
else:
calib_dest_path = dest_path + '/depthai_calib.json'
# calibration_handler.eepromToJsonFile(calib_dest_path)
resImage = create_blank(900, 512, rgb_color=red)
text = "Calibratin succesful. " + str(epiploar_error)
cv2.putText(resImage, text, (10, 250), font, 2, (0, 0, 0), 2)
# text = "Device not found to write to EEPROM"
# cv2.putText(resImage, text, (10, 300), font, 2, (0, 0, 0), 2)
if resImage is not None:
cv2.imshow("Result Image", resImage)
cv2.waitKey(0)
except AssertionError as e:
print("[ERROR] " + str(e))
raise SystemExit(1)
def run(self):
if 'capture' in self.args.mode:
try:
if Path('dataset').exists():
shutil.rmtree('dataset/')
Path("dataset/left").mkdir(parents=True, exist_ok=True)
Path("dataset/right").mkdir(parents=True, exist_ok=True)
if not self.args.disableRgb:
Path("dataset/rgb").mkdir(parents=True, exist_ok=True)
except OSError:
traceback.print_exc()
print("An error occurred trying to create image dataset directories!")
raise SystemExit(1)
self.show_info_frame()
self.capture_images()
self.dataset_path = str(Path("dataset").absolute())
if 'process' in self.args.mode:
self.calibrate()
print('py: DONE.')if name == "main":
Main().run()
JamesYeh in the branch lite_calibration that you are using it is in
depthai/calibrate.py
in there, lines 570-576 change them from:
try:
is_write_succesful = self.device.flashCalibration(calibration_handler)
except:
print("Writing in except...")
is_write_succesful = self.device.flashCalibration(calibration_handler)to
self.device.flashCalibration2(calibration_handler)so it will now look like this:
...
...
calib_dest_path = dest_path + '/' + mx_serial_id + '.json'
calibration_handler.eepromToJsonFile(calib_dest_path)
is_write_succesful = False
is_write_succesful = self.device.flashCalibration2(calibration_handler)
if is_write_succesful:
resImage = create_blank(900, 512, rgb_color=green)
...
...
...and run calibration again, you should get an Error, send it to us
I changed the calibrate.py and ran it again. It is still the same. See the screen shots...
JamesYeh thank you, good job. Now, I want to ask you to do one more thing (consists of two sub tasks 
).
With editor of your choice create a new file called get_calibration.py and save it to your depthai folder, so it will look like this: dephtai/get_calibration.py
The content of the get_calibration.py file is:
import depthai as dai
with dai.Device() as device:
print(device.readCalibration2().eepromToJson())and in depthai folder run python get_calibration.py
This will print the current device calibration in your terminal. Please copy it and send it to us.
Second task is the same one you have done before. In depthai/resources there is your <device_mx_id(long number).json> file. Please send its contents to us as well.
Thank you for your patience.
Best regards
Petr
Ok will try it. And, is it possible to run the test again with the sames images in Dataset folder under depthai folder? It would be more consistent for this debug with the same image set. Thanks!
here is the .json text file.
{
"batchName": "",
"batchTime": 0,
"boardConf": "",
"boardCustom": "",
"boardName": "OAK-D-LITE",
"boardOptions": 0,
"boardRev": "R0M0E0",
"cameraData": [
[
1,
{
"cameraType": 0,
"distortionCoeff": [
-28.19111442565918,
319.1015625,
0.0021235786844044924,
-0.00796385295689106,
-973.7730712890625,
-28.19227409362793,
319.0585021972656,
-973.5380249023438,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0
],
"extrinsics": {
"rotationMatrix": [
[
0.9998503923416138,
-0.0063782683573663235,
-0.016076868399977684
],
[
0.0063193743117153645,
0.9999731183052063,
-0.003711411962285638
],
[
0.01610010862350464,
0.003609261242672801,
0.999863862991333
]
],
"specTranslation": {
"x": -7.5,
"y": 0.0,
"z": 0.0
},
"toCameraSocket": 2,
"translation": {
"x": -7.544513702392578,
"y": -0.06922637671232224,
"z": -0.03127232566475868
}
},
"height": 480,
"intrinsicMatrix": [
[
455.9234619140625,
0.0,
319.5633239746094
],
[
0.0,
456.3455505371094,
230.58319091796875
],
[
0.0,
0.0,
1.0
]
],
"lensPosition": 0,
"specHfovDeg": 72.9000015258789,
"width": 640
}
],
[
2,
{
"cameraType": 0,
"distortionCoeff": [
21.66294288635254,
-312.0931396484375,
0.0010793297551572323,
-0.0007400921895168722,
906.7825927734375,
21.852170944213867,
-314.07861328125,
912.0392456054688,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0
],
"extrinsics": {
"rotationMatrix": [
[
0.9998428821563721,
0.00951849389821291,
-0.014950711280107498
],
[
-0.009514091536402702,
0.9999546408653259,
0.00036551340599544346
],
[
0.014953513629734516,
-0.00022321353026200086,
0.9998881220817566
]
],
"specTranslation": {
"x": 3.75,
"y": 0.0,
"z": 0.0
},
"toCameraSocket": 0,
"translation": {
"x": 3.9650027751922607,
"y": 0.006998621392995119,
"z": -0.5213539600372314
}
},
"height": 480,
"intrinsicMatrix": [
[
455.4236755371094,
0.0,
304.4522399902344
],
[
0.0,
455.9582824707031,
240.3455352783203
],
[
0.0,
0.0,
1.0
]
],
"lensPosition": 0,
"specHfovDeg": 72.9000015258789,
"width": 640
}
],
[
0,
{
"cameraType": 0,
"distortionCoeff": [
30.001792907714844,
-27.810789108276367,
0.0005656384746544063,
0.0028413927648216486,
170.4805908203125,
30.07124900817871,
-31.029281616210938,
174.8137664794922,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0
],
"extrinsics": {
"rotationMatrix": [],
"specTranslation": {
"x": 0.0,
"y": 0.0,
"z": 0.0
},
"toCameraSocket": -1,
"translation": {
"x": 0.0,
"y": 0.0,
"z": 0.0
}
},
"height": 1080,
"intrinsicMatrix": [
[
1493.0745849609375,
0.0,
1028.433837890625
],
[
0.0,
1489.53271484375,
517.1607055664063
],
[
0.0,
0.0,
1.0
]
],
"lensPosition": 135,
"specHfovDeg": 68.7938003540039,
"width": 1920
}
]
],
"hardwareConf": "",
"imuExtrinsics": {
"rotationMatrix": [],
"specTranslation": {
"x": 0.0,
"y": 0.0,
"z": 0.0
},
"toCameraSocket": -1,
"translation": {
"x": 0.0,
"y": 0.0,
"z": 0.0
}
},
"miscellaneousData": [],
"productName": "",
"stereoRectificationData": {
"leftCameraSocket": 1,
"rectifiedRotationLeft": [
[
0.9999244809150696,
0.0028120274655520916,
-0.011965838260948658
],
[
-0.002833560574799776,
0.9999943971633911,
-0.001782975741662085
],
[
0.01196075789630413,
0.001816747011616826,
0.9999268054962158
]
],
"rectifiedRotationRight": [
[
0.9999493360519409,
0.009175259619951248,
0.00414483156055212
],
[
-0.009182704612612724,
0.9999562501907349,
0.0017808872507885098
],
[
-0.004128310363739729,
-0.0018188577378168702,
0.9999898076057434
]
],
"rightCameraSocket": 2
},
"version": 7
}
From the EEprom data:
PS C:\GG\OAK-Calibrate\OAK-Calibrate\depthai> python get_calibrate.py
{'batchName': '', 'batchTime': 0, 'boardConf': '', 'boardCustom': '', 'boardName': 'OAK-D-LITE', 'boardOptions': 0, 'boardRev': 'R1M1E3', 'cameraData': [[0, {'cameraType': 0, 'distortionCoeff': [-4.465783596038818, 9.97364616394043, -0.00019955226161982864, -0.0010946181137114763, -4.277606964111328, -4.544586181640625, 10.269360542297363, -4.632837295532227, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], 'extrinsics': {'rotationMatrix': [[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0]], 'specTranslation': {'x': -0.0, 'y': -0.0, 'z': -0.0}, 'toCameraSocket': -1, 'translation': {'x': 0.0, 'y': 0.0, 'z': 0.0}}, 'height': 2160, 'intrinsicMatrix': [[2969.224609375, 0.0, 2027.668701171875], [0.0, 2969.224609375, 1030.9114990234375], [0.0, 0.0, 1.0]], 'lensPosition': 0, 'specHfovDeg': 68.7938003540039, 'width': 3840}], [1, {'cameraType': 0, 'distortionCoeff': [-5.925610542297363, 13.577345848083496, 0.0005030203028582036, -0.0037203540559858084, 2.8491311073303223, -5.928144454956055, 13.576969146728516, 2.8172836303710938, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], 'extrinsics': {'rotationMatrix': [[0.9999157190322876, -0.005482868291437626, -0.011770736426115036], [0.005498494952917099, 0.9999840259552002, 0.0012956152204424143], [0.011763445101678371, -0.0013602273538708687, 0.9999299049377441]], 'specTranslation': {'x': -7.5, 'y': 0.0, 'z': 0.0}, 'toCameraSocket': 2, 'translation': {'x': -7.459471702575684, 'y': -0.11444893479347229, 'z': -0.08647604286670685}}, 'height': 480, 'intrinsicMatrix': [[456.83233642578125, 0.0, 322.490234375], [0.0, 456.83233642578125, 228.93768310546875], [0.0, 0.0, 1.0]], 'lensPosition': 0, 'specHfovDeg': 72.9000015258789, 'width': 640}], [2, {'cameraType': 0, 'distortionCoeff': [15.70577621459961, -133.31661987304688, -0.0004125449631828815, -0.002012420678511262, 418.70599365234375, 15.833054542541504, -134.20359802246094, 420.8946533203125, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0], 'extrinsics': {'rotationMatrix': [[0.9999483227729797, 0.008442151360213757, -0.005667971912771463], [-0.008480061776936054, 0.9999415874481201, -0.0066981068812310696], [0.005611094646155834, 0.00674582552164793, 0.9999614953994751]], 'specTranslation': {'x': 3.75, 'y': 0.0, 'z': 0.0}, 'toCameraSocket': 0, 'translation': {'x': 3.7240123748779297, 'y': 0.07089735567569733, 'z': -0.19739195704460144}}, 'height': 480, 'intrinsicMatrix': [[455.19598388671875, 0.0, 302.0895690917969], [0.0, 455.19598388671875, 237.84361267089844], [0.0, 0.0, 1.0]], 'lensPosition': 0, 'specHfovDeg': 72.9000015258789, 'width': 640}]], 'hardwareConf': '', 'imuExtrinsics': {'rotationMatrix': [[0.0, 0.0, 0.0], [0.0, 0.0, 0.0], [0.0, 0.0, 0.0]], 'specTranslation': {'x': 0.0, 'y': 0.0, 'z': 0.0}, 'toCameraSocket': -1, 'translation': {'x': 0.0, 'y': 0.0, 'z': 0.0}}, 'miscellaneousData': [], 'productName': '', 'stereoRectificationData': {'leftCameraSocket': 1, 'rectifiedRotationLeft': [[0.9999515414237976, 0.009842065162956715, -0.00015885815082583576], [-0.009841952472925186, 0.9999513030052185, 0.0006939409067854285], [0.0001656802196521312, -0.0006923438049852848, 0.9999997615814209]], 'rectifiedRotationRight': [[0.9998151659965515, 0.015339930541813374, 0.011590640991926193], [-0.015331892296671867, 0.999882161617279, -0.0007820441969670355], [-0.011601271107792854, 0.0006041931919753551, 0.9999325275421143]], 'rightCameraSocket': 2}, 'version': 6}
PS C:\GG\OAK-Calibrate\OAK-Calibrate\depthai>
JamesYeh Thank you very much. We know what the problem is, we can solve it, we just have to discuss what the best possible course of action is. Ill get back to you as soon as I can.
Thanks! Are we talking about 1-2 days or more? We've tried the calibration in the past week without success...
JamesYeh Hello James. The fix is done.
Please pull latest changes from lite_calibration branch, i.e. git fetch and git pull.
After that you can do the calibration one more time, this time it should succeed. If not, let me know, but it is very unlikely.
can you please elaborate more how to proceed with some details? Where is the lite_calibration branch, etc... Thanks!
@JamesYeh if you dont want to repeat the image capturing, because you already have those, then you can comment out lines 611-623 in calibrate.py script, i.e. add # in front of each line.
JamesYeh You wrote:
git clone https://github.com/luxonis/depthai.git
cd depthai
git checkout lite_calibration
Right now, open your terminal and cd into your deptahi dir. When you are in the depthai dir, you enter commands
git fetch confirm with enter
git pull confirm with enter
